/* eng_cnf.c */

 /* Written by Stephen Henson (shenson@bigfoot.com) for the OpenSSL

  * project 2001.

  */

 /* ====================================================================

  * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  *

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer. 

  *

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in

  *    the documentation and/or other materials provided with the

  *    distribution.

  *

  * 3. All advertising materials mentioning features or use of this

  *    software must display the following acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

  *

  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

  *    endorse or promote products derived from this software without

  *    prior written permission. For written permission, please contact

  *    licensing@OpenSSL.org.

  *

  * 5. Products derived from this software may not be called "OpenSSL"

  *    nor may "OpenSSL" appear in their names without prior written

  *    permission of the OpenSSL Project.

  *

  * 6. Redistributions of any form whatsoever must retain the following

  *    acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

  *

  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  * ====================================================================

  *

  * This product includes cryptographic software written by Eric Young

  * (eay@cryptsoft.com).  This product includes software written by Tim

  * Hudson (tjh@cryptsoft.com).

  *

  */

  /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #include "eng_int.h"

 #include <openssl/conf.h>

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 /* #define ENGINE_CONF_DEBUG */

 /* ENGINE config module */

 static char *skip_dot(char *name)

 	{

 	char *p;

 	p = strchr(name, '.');

 	if (p)

 		return p + 1;

 	return name;

 	}

 #ifndef EMULATOR

 static STACK_OF(ENGINE) *initialized_engines = NULL;

 #else

 GET_STATIC_VAR_FROM_TLS(initialized_engines,eng_cnf,STACK_OF(ENGINE) *)

 #define initialized_engines (*GET_WSD_VAR_NAME(initialized_engines,eng_cnf, s)())

 #endif

 static int int_engine_init(ENGINE *e)

 	{

 	if (!ENGINE_init(e))

 		return 0;

 	if (!initialized_engines)

 		initialized_engines = sk_ENGINE_new_null();

 	if (!initialized_engines || !sk_ENGINE_push(initialized_engines, e))

 		{

 		ENGINE_finish(e);

 		return 0;

 		}

 	return 1;

 	}

 static int int_engine_configure(char *name, char *value, const CONF *cnf)

 	{

 	int i;

 	int ret = 0;

 	long do_init = -1;

 	STACK_OF(CONF_VALUE) *ecmds;

 	CONF_VALUE *ecmd;

 	char *ctrlname, *ctrlvalue;

 	ENGINE *e = NULL;

 	name = skip_dot(name);

 #ifdef ENGINE_CONF_DEBUG

 	fprintf(stderr, "Configuring engine %s\n", name);

 #endif

 	/* Value is a section containing ENGINE commands */

 	ecmds = NCONF_get_section(cnf, value);

 	if (!ecmds)

 		{

 		ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_ENGINE_SECTION_ERROR);

 		return 0;

 		}

 	for (i = 0; i < sk_CONF_VALUE_num(ecmds); i++)

 		{

 		ecmd = sk_CONF_VALUE_value(ecmds, i);

 		ctrlname = skip_dot(ecmd->name);

 		ctrlvalue = ecmd->value;

 #ifdef ENGINE_CONF_DEBUG

 	fprintf(stderr, "ENGINE conf: doing ctrl(%s,%s)\n", ctrlname, ctrlvalue);

 #endif

 		/* First handle some special pseudo ctrls */

 		/* Override engine name to use */

 		if (!strcmp(ctrlname, "engine_id"))

 			name = ctrlvalue;

 		/* Load a dynamic ENGINE */

 		else if (!strcmp(ctrlname, "dynamic_path"))

 			{

 			e = ENGINE_by_id("dynamic");

 			if (!e)

 				goto err;

 			if (!ENGINE_ctrl_cmd_string(e, "SO_PATH", ctrlvalue, 0))

 				goto err;

 			if (!ENGINE_ctrl_cmd_string(e, "LIST_ADD", "2", 0))

 				goto err;

 			if (!ENGINE_ctrl_cmd_string(e, "LOAD", NULL, 0))

 				goto err;

 			}

 		/* ... add other pseudos here ... */

 		else

 			{

 			/* At this point we need an ENGINE structural reference

 			 * if we don't already have one.

 			 */

 			if (!e)

 				{

 				e = ENGINE_by_id(name);

 				if (!e)

 					return 0;

 				}

 			/* Allow "EMPTY" to mean no value: this allows a valid

 			 * "value" to be passed to ctrls of type NO_INPUT

 		 	 */

 			if (!strcmp(ctrlvalue, "EMPTY"))

 				ctrlvalue = NULL;

 			if (!strcmp(ctrlname, "init"))

 				{

 				if (!NCONF_get_number_e(cnf, value, "init", &do_init))

 					goto err;

 				if (do_init == 1)

 					{

 					if (!int_engine_init(e))

 						goto err;

 					}

 				else if (do_init != 0)

 					{

 					ENGINEerr(ENGINE_F_INT_ENGINE_CONFIGURE, ENGINE_R_INVALID_INIT_VALUE);

 					goto err;

 					}

 				}

 			else if (!strcmp(ctrlname, "default_algorithms"))

 				{

 				if (!ENGINE_set_default_string(e, ctrlvalue))

 					goto err;

 				}

 			else if (!ENGINE_ctrl_cmd_string(e,

 					ctrlname, ctrlvalue, 0))

 				return 0;

 			}

 		}

 	if (e && (do_init == -1) && !int_engine_init(e))

 		goto err;

 	ret = 1;

 	err:

 	if (e)

 		ENGINE_free(e);

 	return ret;

 	}

 static int int_engine_module_init(CONF_IMODULE *md, const CONF *cnf)

 	{

 	STACK_OF(CONF_VALUE) *elist;

 	CONF_VALUE *cval;

 	int i;

 #ifdef ENGINE_CONF_DEBUG

 	fprintf(stderr, "Called engine module: name %s, value %s\n",

 			CONF_imodule_get_name(md), CONF_imodule_get_value(md));

 #endif

 	/* Value is a section containing ENGINEs to configure */

 	elist = NCONF_get_section(cnf, CONF_imodule_get_value(md));

 	if (!elist)

 		{

 		ENGINEerr(ENGINE_F_INT_ENGINE_MODULE_INIT, ENGINE_R_ENGINES_SECTION_ERROR);

 		return 0;

 		}

 	for (i = 0; i < sk_CONF_VALUE_num(elist); i++)

 		{

 		cval = sk_CONF_VALUE_value(elist, i);

 		if (!int_engine_configure(cval->name, cval->value, cnf))

 			return 0;

 		}

 	return 1;

 	}

 static void int_engine_module_finish(CONF_IMODULE *md)

 	{

 	ENGINE *e;

 	while ((e = sk_ENGINE_pop(initialized_engines)))

 		ENGINE_finish(e);

 	sk_ENGINE_free(initialized_engines);

 	initialized_engines = NULL;

 	}

 EXPORT_C void ENGINE_add_conf_module(void)

 	{

 	CONF_module_add("engines",

 			int_engine_module_init,

 			int_engine_module_finish);

 	}